Jonas Holm

Associate, Master of Laws, M.Sc. (Econ.)

Services

  1. Environment, Energy & Green Transition

Contact details

I advise clients on energy law matters, industrial and infrastructure projects, and contractual issues related to these sectors.

A key part of my work is an interdisciplinary approach and understanding the diverse forces that shape the landscape in which companies operate. Businesses that understand the regulatory, political, economic and commercial realities of an increasingly interconnected world gain a competitive advantage. I provide holistic and strategic legal advice that goes beyond regulatory considerations by incorporating interdisciplinary and commercial insights.

I am currently pursuing doctoral studies in energy law. In addition to my law degree, I hold a Master’s degree in economics, which enables me to bridge legal analysis with commercial strategy.

Before joining Castrén & Snellman, I advised both Finnish and international industrial companies, as well as private equity sponsors, at another leading law firm. My experience spans complex transactions and regulatory frameworks, always with a focus on delivering pragmatic, business-oriented solutions. This multidisciplinary foundation allows me to provide specific advice to diverse stakeholders and to help our clients build sustainable success stories.

Latest references

Brookfield – EUR 1 billion holdco financing for DayOne Data Centers
We advised a leading global investment firm Brookfield, alongside a global sovereign wealth investor, on the Finnish law aspects of a EUR 1 billion holdco financing for DayOne Data Centers, a Singapore-headquartered developer and operator of hyperscale data centres. Structured as a seven-year secured holdco financing facility of €500 million, expandable to €1 billion – and secured by DayOne’s Finland platform – the financing will support the rollout of hyperscale developments in Lahti and Kouvola, providing nearly 300MW of planned capacity across Finland. The proceeds will also support DayOne’s global expansion across the EU and APAC, with flexibility to allocate to other key growth markets as required.
Case published 29.1.2026
Fingrid – Update of EMTN Programme
We advised Fingrid Oyj on the Finnish law aspects in the update of a EUR 3,000,000 Euro Medium Term Note programme (EMTN). Notes issued under the programme may be listed on the Irish Stock Exchange. Fingrid operates Finland’s main electricity transmission grid and all significant cross-border transmission connections. The main grid is the backbone of the electricity transmission network, to which major power plants, industrial plants and regional electricity distribution networks are connected.
Case published 17.3.2026
Jensen-Group – Acquisition of Vestek
We advised Jensen-Group with its acquisition of Oy Vestek Ab, the long-standing distributor of Jensen solutions in Finland. The strategic step underlines Jensen-Group’s long-term commitment to the Nordic region and its ambition to further expand sustainable and future-oriented laundry automation solutions in Finland. Jensen-Group, listed on Euronext Brussels, is a global leader in heavy‑duty laundry technology, known for designing and manufacturing industrial laundry machines, systems, and turnkey automation solutions. Oy Vestek Ab is a Finnish import company founded in 1961. The company’s main activity is to import supplies and machinery, including providing products and services for the health care and laundry industries, from Europe and the USA and to act as a wholesale dealer on the Finnish market.
Case published 16.3.2026
Fortum – AI workshop
We delivered two AI workshops for Fortum Corporation’s Mergers and Acquisitions team, with both legal and business professionals participating. The sessions combined fundamental AI principles with custom use cases for commercially available AI tools tailored to Fortum’s needs. We also presented a bespoke solution merging AI with a script-based tool developed by our Legal Tech team, enabling a more automated way of working. Our experts conducted the training drawing on their legal background and leading experience in this emerging field of legal technology. Participants particularly appreciated the clarity and relevance of the implementations demonstrated. ‘C&S delivered an excellent, well-structured series of workshops, with directly applicable takeaways,’ says Sabina Hautaviita, Legal Counsel for M&A at Fortum.
Case published 9.3.2026
VR – Supreme Court decision clarifies working time practices
We successfully represented VR Group before the Supreme Court in a case concerning the meal break practice of commuter train drivers. On 6 February 2026, the Supreme Court ruled in VR’s favour (decision KKO:2026:12), confirming that VR had the right to amend the commuter train drivers’ meal break practice in 2021 by rendering the break unpaid in accordance with the applicable collective agreement. This decision clarifies the interpretation of collective agreements and employment legislation as well as the limits of the employer’s right to direct work. Over 250 commuter train drivers challenged the unpaid meal break practice which VR introduced in April 2021. Before the change, meal breaks had a long history of being paid. The change was based on the train drivers’ collective agreement, which allows for meal breaks to be organised either as paid or unpaid time. The Supreme Court ruled that the scheduling and managing of breaks falls within the core area of the employer’s right to direct work. This increases the threshold for an established practice becoming a binding condition for the parties. Merely following a practice consistently and over a long period of time does not make the practice binding; instead, the employer’s intent to commit to the practice must be clearly evident from the employer’s conduct or other circumstances. As both alternatives – paid and unpaid – for organising meal breaks had been retained in the collective agreement despite other amendments over the years, it could not be considered that VR had intended to commit to the paid break practice and waive its right to direct work as regards break scheduling. It was also significant that the employment contracts explicitly referred only to the collective agreement as regards working time. The Supreme Court deemed that the employees’ paid meal break was not an established term of employment and that VR was entitled to change the practice based on the collective agreement. The employer had the right, by virtue of its right to direct work, to unilaterally change the meal break practice by choosing to apply the other arrangement permitted by the collective agreement.
Case published 3.3.2026
CapMan Growth – Investment in Kuntokeskus Liikku
We are assisting CapMan Growth in its significant investment in Kuntokeskus Liikku, a Finnish gym chain known for its high-quality self-service facilities and excellent value for money. The investment will further strengthen Liikku’s position as a market leader and support the continued execution of its growth strategy. Liikku is one of Finland’s leading fitness chains, with more than 70 locations across the country serving nearly 90,000 members. The company’s concept is to offer high-quality self-service gyms at an exceptionally competitive price point which, combined with strong operational efficiency, provides a solid foundation for profitable growth. The company’s main shareholder is COR Group, a long-time partner of CapMan Growth, and a Finnish health and wellness conglomerate known for active ownership and long-term value creation. CapMan Growth is a leading Finnish growth investor that makes significant investments in entrepreneur-led growth companies with a turnover of €10–200 million. CapMan Growth is part of CapMan, which is a leading Nordic private equity investor engaged in active value creation work. CapMan has been listed on the Helsinki Stock Exchange since 2001.
Case published 27.2.2026
Terrafame – Environmental and water management permit processes concerning the company’s entire operations and the KL1 side rock area
Castrén & Snellman successfully assisted Terrafame Ltd in environmental and water management permit processes concerning the company’s entire operations and the KL1 side rock area, on which the Supreme Administrative Court issued its decision on 12 February 2026 (KHO 366/2026 and 367/2026). The changes made to the decisions of the Vaasa Administrative Court as a result of Terrafame’s appeals, enable the company to implement its new strategy and develop its operations as planned. The decisions of the Supreme Administrative Court brought the nearly ten-year-long permit process to a close.
Case published 20.2.2026
Plastep – Sale of share capital
We advised Plastep Oy and its shareholders in the sale of the entire share capital of the company to FinnProfiles Oy. The acquisition strengthens FinnProfiles’ position as a Nordic expert in sealing and insulation solutions and expands the company’s expertise in the manufacture of plastic products and technical components. Plastep, founded in 2001 and based in South Savo, is a contract manufacturer specialising in the design and production of demanding and technical plastic components, with a turnover of EUR 6.5 million.
Case published 18.2.2026

Get to know our other experts in the field

Marius af Schultén
Position: Partner
Primary service Environment, Energy & Green Transition
 +358 40 565 7034
Tarja Pirinen
Position: Partner
Primary service Environment, Energy & Green Transition
 +358 40 350 7797
Samuli Tarkiainen
Position: Partner
Primary service Environment, Energy & Green Transition
 +358 41 436 0953
Kanerva Sunila
Position: Counsel
Primary service Environment, Energy & Green Transition
 +358 20 776 5060
Sanna Aalto-Setälä
Position: Senior Associate
Primary service Environment, Energy & Green Transition
 +358 50 331 5889
Fiiu Linninen
Position: Senior Associate
Primary service Environment, Energy & Green Transition
 +358 44 032 6866
Joel Aartolahti
Position: Associate
Primary service Environment, Energy & Green Transition
 +358 50 460 3771
Minttu-Maria Miettinen
Position: Associate
Primary service Environment, Energy & Green Transition
 +358 40 071 0263
Sonja Pätäri
Position: Associate
Primary service Environment, Energy & Green Transition
 +358 50 534 8412
Konsta Peussa
Position: Associate
Primary service Environment, Energy & Green Transition
 +358 45 788 18016